C6 facorty HP ranges from 430 for the base model to 638 for the ZR1. Are the drivetrain components essentially the same ....except for gear ratios? I'm already thinking ahead to the day when I may decide to supercharge my GS. It's a 6sp manual. Will the hardware hold up against the extra torque and hp?

 

You will probably want to put in a Z06 diff.

Might want to spend time in the Forced Induction Forum and ask questions of the guys there who live FI.

http://forums.corvetteforum.com/c6-f...n-nitrous-123/

 

There seems to be some debate over if the ZO6 Diff was included on 09+ Corvettes...

 

Shows how much I don't know. I hadn't heard that.

 

I remember reading a few threads on here about it. No soild proof, a couple of the installer/tuners say it's fact and a few of the more knowledgable posters say it's a myth.

 

I agreed with your concerned, most people look to increase their power and don't think about the expenses after the power, you're about one of the first I realised is thinking ahead before leaping.
I can tell you from my experience about not thinking ahead and what need to be done to avoid what I had to go through.

Clutch need to change, don't buy a spec clutch because it grabs too much and that cause brakage, but you will need to buy a new clutch, recomends a ZR1 dual clutch by Ligenfelter, smooth pedal like factory.

Transmission and rear is good to change to avoid breakdown time and damages under big hp,I recomend a C6 Z06 2008 and up transmission because its a T6060which is an improvement to the older years, the transmission in not much stronger but it has a larger output shalf which helps with less flex under high hp, now rear is any C6 Z06 rear, only a C6 Z06 rear can work because the larger output shalf restrict you from using a stock rear and its also larger and stronger, they are all 3.42 ratio and there are no gears advailable for them as yet (I do have a set of 3.73 complete rear for sale for the C6Z06) and the recomended application.
Change the axles to the 1997-04 axles, they are stronger and better, the new ones break very easy with more hp than 30% over factory.

Remember the old parts can always sell to recover some of the expenses it cost to improve it.
You will also need to get a QTP bellhousing, as a MN6 its your safety to change that because you will not like to shatter a clutch at high RPM and loose your leg. The QTP is steel and the OEM is alluminium, remember safety to yourself first.
Now after supercharging your baby you will be ready for what ever has to come its way, you could get a set of Coilovers and you will need a set of Nitto 345 30 19 sticky tires to help put the power to the ground.